projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 9e82cf6a EVH |
1 | /* |
| 2 | * V9FS definitions. | |
| 3 | * | |
| 8a0dc95f | 4 | * Copyright (C) 2004-2008 by Eric Van Hensbergen <ericvh@gmail.com> |
| 9e82cf6a EVH |
5 | * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 42e8c509 EVH |
8 | * it under the terms of the GNU General Public License version 2 |
| 9 | * as published by the Free Software Foundation. | |
| 9e82cf6a EVH |
10 | * |
| 11 | * This program is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License | |
| 17 | * along with this program; if not, write to: | |
| 18 | * Free Software Foundation | |
| 19 | * 51 Franklin Street, Fifth Floor | |
| 20 | * Boston, MA 02111-1301 USA | |
| 21 | * | |
| 22 | */ | |
| 23 | ||
| 9e82cf6a EVH |
24 | /* |
| 25 | * Session structure provides information for an opened session | |
| 26 | * | |
| 27 | */ | |
| 28 | ||
| 29 | struct v9fs_session_info { | |
| 30 | /* options */ | |
| 2405669b | 31 | unsigned char flags; /* session flags */ |
| 9e82cf6a | 32 | unsigned char nodev; /* set to 1 if no disable device mapping */ |
| 9e82cf6a | 33 | unsigned short debug; /* debug level */ |
| 9e82cf6a | 34 | unsigned int afid; /* authentication fid */ |
| e03abc0c | 35 | unsigned int cache; /* cache mode */ |
| 9e82cf6a | 36 | |
| a80d923e | 37 | char *options; /* copy of mount options */ |
| ba17674f LI |
38 | char *uname; /* user name to mount as */ |
| 39 | char *aname; /* name of remote hierarchy being mounted */ | |
| 8a0dc95f | 40 | unsigned int maxdata; /* max data for client interface */ |
| bd32b82d LI |
41 | unsigned int dfltuid; /* default uid/muid for legacy support */ |
| 42 | unsigned int dfltgid; /* default gid for legacy support */ | |
| ba17674f | 43 | u32 uid; /* if ACCESS_SINGLE, the uid that has access */ |
| bd238fb4 | 44 | struct p9_client *clnt; /* 9p client */ |
| 3cf6429a | 45 | struct dentry *debugfs_dir; |
| 9e82cf6a EVH |
46 | }; |
| 47 | ||
| 2405669b LI |
48 | /* session flags */ |
| 49 | enum { | |
| ba17674f LI |
50 | V9FS_EXTENDED = 0x01, /* 9P2000.u */ |
| 51 | V9FS_ACCESS_MASK = 0x06, /* access mask */ | |
| 52 | V9FS_ACCESS_SINGLE = 0x02, /* only one user can access the files */ | |
| 53 | V9FS_ACCESS_USER = 0x04, /* attache per user */ | |
| 54 | V9FS_ACCESS_ANY = 0x06, /* use the same attach for all users */ | |
| 2405669b LI |
55 | }; |
| 56 | ||
| e03abc0c EVH |
57 | /* possible values of ->cache */ |
| 58 | /* eventually support loose, tight, time, session, default always none */ | |
| 59 | enum { | |
| 60 | CACHE_NONE, /* default */ | |
| 61 | CACHE_LOOSE, /* no consistency */ | |
| 62 | }; | |
| 63 | ||
| 3cf6429a LI |
64 | extern struct dentry *v9fs_debugfs_root; |
| 65 | ||
| bd238fb4 LI |
66 | struct p9_fid *v9fs_session_init(struct v9fs_session_info *, const char *, |
| 67 | char *); | |
| 9e82cf6a | 68 | void v9fs_session_close(struct v9fs_session_info *v9ses); |
| 322b329a | 69 | void v9fs_session_cancel(struct v9fs_session_info *v9ses); |
| 9e82cf6a EVH |
70 | |
| 71 | #define V9FS_MAGIC 0x01021997 | |
| 72 | ||
| 73 | /* other default globals */ | |
| bd32b82d | 74 | #define V9FS_PORT 564 |
| 9e82cf6a EVH |
75 | #define V9FS_DEFUSER "nobody" |
| 76 | #define V9FS_DEFANAME "" | |
| bd32b82d LI |
77 | #define V9FS_DEFUID (-2) |
| 78 | #define V9FS_DEFGID (-2) | |
| 9e82cf6a | 79 | |
| bd238fb4 LI |
80 | static inline struct v9fs_session_info *v9fs_inode2v9ses(struct inode *inode) |
| 81 | { | |
| 82 | return (inode->i_sb->s_fs_info); | |
| 83 | } | |
| 2405669b LI |
84 | |
| 85 | static inline int v9fs_extended(struct v9fs_session_info *v9ses) | |
| 86 | { | |
| 87 | return v9ses->flags & V9FS_EXTENDED; | |
| 88 | } |